Class template basic_managed_external_buffer

Boost C++ Libraries

Class template basic_managed_external_buffer

boost::interprocess::basic_managed_external_buffer

Synopsis

// In header: <boost/interprocess/managed_external_buffer.hpp>

template<typename CharType, typename AllocationAlgorithm, 
         template< class IndexConfig > class IndexType> 
class basic_managed_external_buffer {
public:
  // types
  typedef base_t::size_type size_type;

  // construct/copy/destruct
  basic_managed_external_buffer();
  basic_managed_external_buffer(create_only_t, void *, size_type);
  basic_managed_external_buffer(open_only_t, void *, size_type);
  basic_managed_external_buffer(basic_managed_external_buffer &&);
  basic_managed_external_buffer& operator=(basic_managed_external_buffer &&);

  // public member functions
  void grow(size_type);
  void swap(basic_managed_external_buffer &);
};

Description

A basic user memory named object creation class. Inherits all basic functionality from basic_managed_memory_impl<CharType, AllocationAlgorithm, IndexType>

`basic_managed_external_buffer` public construct/copy/destruct

```
basic_managed_external_buffer();
```
Default constructor. Does nothing. Useful in combination with move semantics

basic_managed_external_buffer(create_only_t, void * addr, size_type size);

Creates and places the segment manager. This can throw.

basic_managed_external_buffer(open_only_t, void * addr, size_type size);

Creates and places the segment manager. This can throw.

```
basic_managed_external_buffer(basic_managed_external_buffer && moved);
```
Moves the ownership of "moved"'s managed memory to *this. Does not throw.

basic_managed_external_buffer& 
operator=(basic_managed_external_buffer && moved);

Moves the ownership of "moved"'s managed memory to *this. Does not throw.

`basic_managed_external_buffer` public member functions

```
void grow(size_type extra_bytes);
```
```
void swap(basic_managed_external_buffer & other);
```
Swaps the ownership of the managed heap memories managed by *this and other. Never throws.